bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 169 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0961-overlays-Add-adafruit18-and-sainsmart18-overlays.patch b/target/linux/bcm27xx/patches-5.4/950-0961-overlays-Add-adafruit18-and-sainsmart18-overlays.patch
new file mode 100644
index 0000000000..986ddd49b5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0961-overlays-Add-adafruit18-and-sainsmart18-overlays.patch
@@ -0,0 +1,169 @@
+From dde4afa87452e8499c611c9a889f4c5f35d9e2bb Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 3 Sep 2020 17:36:00 +0100
+Subject: [PATCH] overlays: Add adafruit18 and sainsmart18 overlays
+
+Add support for three ST7735R-based displays - adafruit18,
+adafruit18_green and sainsmart18.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  2 +
+ arch/arm/boot/dts/overlays/README             | 15 ++++++
+ .../boot/dts/overlays/adafruit18-overlay.dts  | 49 +++++++++++++++++++
+ .../boot/dts/overlays/sainsmart18-overlay.dts | 47 ++++++++++++++++++
+ 4 files changed, 113 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/adafruit18-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/sainsmart18-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -4,6 +4,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += overlay_ma
+ 
+ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	act-led.dtbo \
++	adafruit18.dtbo \
+ 	adau1977-adc.dtbo \
+ 	adau7002-simple.dtbo \
+ 	ads1015.dtbo \
+@@ -147,6 +148,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	rpi-tv.dtbo \
+ 	rpivid-v4l2.dtbo \
+ 	rra-digidac1-wm8741-audio.dtbo \
++	sainsmart18.dtbo \
+ 	sc16is750-i2c.dtbo \
+ 	sc16is752-i2c.dtbo \
+ 	sc16is752-spi0.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -261,6 +261,14 @@ Params: activelow               Set to "
+                                 REQUIRED
+ 
+ 
++Name:   adafruit18
++Info:   Overlay for the SPI-connected Adafruit 1.8" display (based on the
++        ST7735R chip). It includes support for the "green tab" version.
++Load:   dtoverlay=adafruit18,<param>=<val>
++Params: green                   Use the adafruit18_green variant.
++        rotate                  Display rotation {0,90,180,270}
++
++
+ Name:   adau1977-adc
+ Info:   Overlay for activation of ADAU1977 ADC codec over I2C for control
+         and I2S for data.
+@@ -2251,6 +2259,13 @@ Load:   dtoverlay=rra-digidac1-wm8741-au
+ Params: <None>
+ 
+ 
++Name:   sainsmart18
++Info:   Overlay for the SPI-connected Sainsmart 1.8" display (based on the
++        ST7735R chip).
++Load:   dtoverlay=sainsmart18,<param>=<val>
++Params: rotate                  Display rotation {0,90,180,270}
++
++
+ Name:   sc16is750-i2c
+ Info:   Overlay for the NXP SC16IS750 UART with I2C Interface
+         Enables the chip on I2C1 at 0x48 (or the "addr" parameter value). To
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/adafruit18-overlay.dts
+@@ -0,0 +1,49 @@
++/*
++ * Device Tree overlay for Adafruit 1.8" TFT LCD with ST7735R chip 160x128
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			af18: adafruit18@0 {
++				compatible = "fbtft,adafruit18";
++				reg = <0>;
++				pinctrl-names = "default";
++				spi-max-frequency = <40000000>;
++				rotate = <90>;
++				buswidth = <8>;
++				fps = <50>;
++				height = <160>;
++				width = <128>;
++				reset-gpios = <&gpio 25 0>;
++				dc-gpios = <&gpio 24 0>;
++				led-gpios = <&gpio 18 0>;
++				bgr;
++				debug = <0>;
++			};
++		};
++	};
++
++	__overrides__ {
++		green = <&af18>, "compatible=fbtft,adafruit18_green";
++		rotate = <&af18>, "rotate:0";
++	};
++};
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/sainsmart18-overlay.dts
+@@ -0,0 +1,47 @@
++/*
++ * Device Tree overlay for the Sainsmart 1.8" TFT LCD with ST7735R chip 160x128
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ss18: sainsmart18@0 {
++				compatible = "fbtft,sainsmart18";
++				reg = <0>;
++				pinctrl-names = "default";
++				spi-max-frequency = <40000000>;
++				rotate = <90>;
++				buswidth = <8>;
++				fps = <50>;
++				height = <160>;
++				width = <128>;
++				reset-gpios = <&gpio 25 0>;
++				dc-gpios = <&gpio 24 0>;
++				bgr;
++				debug = <0>;
++			};
++		};
++	};
++
++	__overrides__ {
++		rotate = <&ss18>, "rotate:0";
++	};
++};